Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)		Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Deferred Compensation, Share-based Payments [Member]	AOCI Attributable to Parent [Member]		Total
Balance at Dec. 31, 2016		$ 573,000	$ 253,570,000	$ (27,888,000)	$ (3,725,000)	$ (183,000)	$ (7,294,000)	[1]	$ 215,053,000
Net income				6,167,000					6,167,000
Other comprehensive income/loss, net of tax							1,798,000	[1]	1,798,000
Stock based compensation			1,329,000						1,329,000
Conversion of subordinated debt to common stock			240,000						240,000
Options exercised		2,000	613,000						615,000
Balance at Sep. 30, 2017		575,000	255,752,000	(21,721,000)	(3,725,000)	(183,000)	(5,496,000)	[1]	225,202,000
Balance at Dec. 31, 2016		573,000	253,570,000	(27,888,000)	(3,725,000)	(183,000)	(7,294,000)	[1]	215,053,000
Reclassification due to the adoption of ASU 2018-02									1,600,000
Other comprehensive income/loss, net of tax	[1]						(215,000)
Balance at Dec. 31, 2017		575,000	256,285,000	(18,983,000)	(3,725,000)	(183,000)	(7,509,000)	[1]	226,460,000
Reclassification due to the adoption of ASU 2018-02				1,640,000			(1,640,000)	[1]
Net income				6,470,000					6,470,000
Other comprehensive income/loss, net of tax							(9,452,000)	[1]	(9,452,000)
Stock based compensation			1,584,000						1,584,000
Conversion of subordinated debt to common stock		16,000	10,078,000						10,094,000
Options exercised		2,000	666,000						668,000
Balance at Sep. 30, 2018		$ 593,000	$ 268,613,000	$ (10,873,000)	$ (3,725,000)	$ (183,000)	$ (18,601,000)	[1]	$ 235,824,000

[1] All amounts are net of tax. Amounts in parentheses indicate reductions to other comprehensive income.